Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: 1.00≤f1/f≤1.50; 25.00≤R5/d5≤35.03, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R11 denotes a curvature radius of an object-side surface of the sixth lens; and d11 denotes an on-axis thickness of the sixth lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, inparticular, to a camera optical lens suitable for handheld devices, suchas smart phones and digital cameras, and imaging devices, such asmonitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes six lenses. Specifically, the camera optical lens 10 includes,from an object side to an image side: an aperture S1, a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and asixth lens L6. An optical element such as an optical filter GF can bearranged between the sixth lens L7 and an image surface S1.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5 and the sixth lens L6 are all made of plasticmaterial.

The second lens L2 has a negative refractive power, and the third lensL3 has a positive refractive power.

Here, a focal length of the camera optical lens 10 is defined as f, afocal length of the first lens L1 is defined as f1, and the cameraoptical lens 10 should satisfy a condition of 2.00≤f1/f≤4.00, whichspecifies a positive refractive power of the first lens L1. A valuelower than a lower limit may facilitate a development towards ultra-thinlenses, but the positive refractive power of the first lens L1 may betoo powerful to correct such a problem as aberration, which isunbeneficial for a development towards wide-angle lenses. On thecontrary, a value higher than an upper limit may weaken the positiverefractive power of the first lens L1, and it will be difficult torealize the development towards ultra-thin lenses. Preferably, thecamera optical lens 10 further satisfies a condition of 2.03≤f1/f≤3.97.

A curvature radius of an object-side surface of the sixth lens L6 isdefined as R11, an on-axis thickness of the sixth lens L6 is defined asd11, and the camera optical lens 10 further satisfies a condition of−20.00≤R11/d11≤−10.00. By controlling a refractive power of the sixthlens L6 within a reasonable range, correction of the aberration of theoptical system can be facilitated. Preferably, the camera optical lens10 further satisfies a condition of −19.88≤R11/d11≤−10.35.

A total optical length from an object-side surface of the first lens L1to the image surface S1 of the camera optical lens along an optical axisis defined as TTL.

When a focal length f of the camera optical lens 10, the focal length f1of the first lens L1, a curvature radius R11 of the object-side surfaceof the sixth lens L6 and an on-axis thickness d11 of the sixth lens L6all satisfy the above conditions, the camera optical lens 10 has anadvantage of high performance and satisfies a design requirement of lowTTL.

In an embodiment, the object-side surface of the first lens L1 is convexin a paraxial region, an image-side surface of the first lens L1 isconcave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object-side surface of the first lens L1 isdefined as R1, a curvature radius of the image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of −21.55≤(R1+R2)/(R1−R2)≤−2.26. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, the camera optical lens 10 furthersatisfies a condition of −13.47≤(R1+R2)/(R1−R2)≤−2.82.

An on-axis thickness of the first lens L1 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.03≤d1/TTL≤0.13. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d1/TTL≤0.10.

In an embodiment, an object-side surface of the second lens L2 is convexin the paraxial region, an image-side surface of the second lens L2 isconcave in the paraxial region, and the second lens L2 has a negativerefractive power.

The focal length of the camera optical lens 10 is defined as f, thefocal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of −573.75≤f2/f≤−3.37. Bycontrolling a negative refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of −358.59≤f2/f≤−4.21.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of 4.78≤(R3+R4)/(R3−R4)≤38.92, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof the aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 7.64≤(R3+R4)/(R3−R4)≤31.14.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.02≤d3/TTL≤0.11. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d3/TTL≤0.09.

In an embodiment, an object-side surface of the third lens L3 is convexin the araxial region, and the third lens L3 has a positive refractivepower.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of 0.61≤f3/f≤17.77. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of 0.98≤f3/f≤14.21.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of an image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of −6.50≤(R5+R6)/(R5−R6)≤−0.63, which effectivelycontrols a shape of the third lens L3 and is beneficial for shaping thethird lens L3 and avoids bad formation of the lens and generation ofstress resulted from too large a curvature of a surface. Preferably, thecamera optical lens 10 further satisfies a condition of−4.06≤(R5+R6)/(R5−R6)≤−0.78.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.05≤d5/TTL≤0.17. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.08≤d5/TTL≤0.14.

In an embodiment, an image-side surface of the fourth lens L4 is concavein the paraxial region, and the fourth lens L4 has a negative refractivepower.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of −5.80≤f4/f≤−1.26. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and the lower sensitivity.Preferably, the camera optical lens 10 further satisfies a condition of−3.63≤f4/f≤−1.58.

A curvature radius of an object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of 0.42≤(R7+R8)/(R7−R8)≤6.85, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 0.66≤(R7+R8)/(R7−R8)≤5.48.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.02≤d7/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.07.

In an embodiment, an image-side surface of the fifth lens L5 is convexin the paraxial region, and the fifth lens L5 has a positive refractivepower.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of 0.22≤f5/f≤0.86, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.36≤f5/f≤0.68.

A curvature radius of an object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of 0.38≤(R9+R10)/(R9−R10)≤1.66, which specifies ashape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.61≤(R9+R10)/(R9−R10)≤1.32.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.09≤d9/TTL≤0.35. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.15≤d9/TTL≤0.28.

In an embodiment, the object-side surface of the sixth lens L6 isconcave in the paraxial region, an image-side surface of the sixth lensL6 is concave in the paraxial region, and the sixth lens L6 has anegative refractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of −1.30≤f6/f≤−0.30. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of−0.81≤f6/f≤−0.37.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of 0.33≤(R11+R12)/(R11−R12)≤1.20, which specifiesa shape of the sixth lens L6. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof the off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 0.53≤(R11+R12)/(R11−R12)≤0.96.

The on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.05≤d11/TTL≤0.14. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.07≤d11/TTL≤0.11.

In an embodiment, the focal length of the camera optical lens is definedas f, a combined focal length of the first lens and the second lens isdefined as f12, and the camera optical lens 10 further satisfies acondition of 0.96≤f12/f≤9.43. This can eliminate the aberration anddistortion of the camera optical lens and reduce a back focal length ofthe camera optical lens, thereby maintaining miniaturization of thecamera optical lens. Preferably, the camera optical lens 10 furthersatisfies a condition of 1.53≤f12/f≤7.54.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.50 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 5.25 mm.

In an embodiment, the camera optical lens 10 has a large aperture, andan F number of the camera optical lens 10 is less than or equal to 1.85.Preferably, the F number of the camera optical lens 10 is less than orequal to 1.82.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens to the image surface of the camera opticallens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd νd S1 ∞ d0= −0.276 R1 1.944 d1= 0.423 nd1 1.5445 ν1 55.99R2 3.574 d2= 0.060 R3 2.075 d3= 0.371 nd2 1.6614 ν2 20.41 R4 1.921 d4=0.327 R5 10.838 d5= 0.563 nd3 1.5445 ν3 55.99 R6 20.469 d6= 0.110 R73.294 d7= 0.285 nd4 1.6355 ν4 23.97 R8 2.110 d8= 0.127 R9 8.802 d9=0.939 nd5 1.5445 ν5 55.99 R10 −1.193 d10= 0.496 R11 −8.460 d11= 0.462nd6 1.5352 ν6 56.12 R12 1.444 d12= 0.555 R13 ∞ d13= 0.210 ndg 1.5168 νg64.17 R14 ∞ d14= 0.073

In the table, meanings of various symbols will be described as follows.

-   -   S1: aperture;    -   R: curvature radius of an optical surface, a central curvature        radius for a lens;    -   R1: curvature radius of the object-side surface of the first        lens L1;    -   R2: curvature radius of the image-side surface of the first lens        L1;    -   R3: curvature radius of the object-side surface of the second        lens L2;    -   R4: curvature radius of the image-side surface of the second        lens L2;    -   R5: curvature radius of the object-side surface of the third        lens L3;    -   R6: curvature radius of the image-side surface of the third lens        L3;    -   R7: curvature radius of the object-side surface of the fourth        lens L4;    -   R8: curvature radius of the image-side surface of the fourth        lens L4;    -   R9: curvature radius of the object-side surface of the fifth        lens L5;    -   R10: curvature radius of the image-side surface of the fifth        lens L5;    -   R11: curvature radius of the object-side surface of the sixth        lens L6;    -   R12: curvature radius of the image-side surface of the sixth        lens L6;    -   R13: curvature radius of an object-side surface of the optical        filter GF;    -   R14: curvature radius of an image-side surface of the optical        filter GF;    -   d: on-axis thickness of a lens and an on-axis distance between        lens;    -   d0: on-axis distance from the aperture S1 to the object-side        surface of the first lens L1;    -   d1: on-axis thickness of the first lens L1;    -   d2: on-axis distance from the image-side surface of the first        lens L1 to the object-side surface of the second lens L2;    -   d3: on-axis thickness of the second lens L2;    -   d4: on-axis distance from the image-side surface of the second        lens L2 to the object-side surface of the third lens L3;    -   d5: on-axis thickness of the third lens L3;    -   d6: on-axis distance from the image-side surface of the third        lens L3 to the object-side surface of the fourth lens L4;    -   d7: on-axis thickness of the fourth lens L4;    -   d8: on-axis distance from the image-side surface of the fourth        lens L4 to the object-side surface of the fifth lens L5;    -   d9: on-axis thickness of the fifth lens L5;    -   d10: on-axis distance from the image-side surface of the fifth        lens L5 to the object-side surface of the sixth lens L6;    -   d11: on-axis thickness of the sixth lens L6;    -   d12: on-axis distance from the image-side surface of the seventh        lens L7 to the object-side surface of the optical filter GF;    -   d13: on-axis thickness of the optical filter GF;    -   d14: on-axis distance from the image-side surface to the image        surface of the optical filter GF;    -   nd: refractive index of the d line;    -   nd1: refractive index of the d line of the first lens L1;    -   nd2: refractive index of the d line of the second lens L2;    -   nd3: refractive index of the d line of the third lens L3;    -   nd4: refractive index of the d line of the fourth lens L4;    -   nd5: refractive index of the d line of the fifth lens L5;    -   nd6: refractive index of the d line of the sixth lens L6;    -   ndg: refractive index of the d line of the optical filter GF;    -   vd: abbe number;    -   v1: abbe number of the first lens L1;    -   v2: abbe number of the second lens L2;    -   v3: abbe number of the third lens L3;    -   v4: abbe number of the fourth lens L4;    -   v5: abbe number of the fifth lens L5;    -   v6: abbe number of the sixth lens L6;    -   vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  1.0923E+00 −6.2098E−03 −9.4218E−03   4.9921E−02−6.4138E−02   3.7170E−02 0.0000E+00 0.0000E+00 R2 −6.0255E+01−1.2909E−01 3.0598E−01 −3.5028E−01 2.4565E−01 −7.2410E−02 0.0000E+000.0000E+00 R3  1.1236E+00 −3.2925E−01 3.9438E−01 −3.6537E−01 1.1058E−01 8.9170E−02 −7.8920E−02  0.0000E+00 R4  7.2834E−03 −9.1434E−021.3055E−02  1.1550E−01 −2.1666E−01   1.6837E−01 −5.7493E−02  0.0000E+00R5  8.2963E+01 −2.7929E−02 −4.5716E−02   1.6788E−03 1.1311E−02−3.6604E−02 0.0000E+00 0.0000E+00 R6 −8.9993E+01 −2.2034E−01 2.7492E−01−3.4691E−01 6.7841E−02  1.8345E−01 −1.6510E−01  4.5772E−02 R7 4.3939E+00 −5.1487E−01 5.6503E−01 −5.7710E−01 2.4645E−01  1.3777E−02−2.2592E−02  0.0000E+00 R8 −1.2346E+01 −2.9677E−01 3.7993E−01−3.7308E−01 2.3806E−01 −1.0202E−01 2.8453E−02 −3.6920E−03  R9−8.9998E+01 −1.1934E−01 1.1120E−01 −4.2471E−02 −9.3641E−03   1.0396E−02−1.8507E−03  0.0000E+00 R10 −5.1001E+00 −1.9806E−01 2.2470E−01−2.0792E−01 1.3214E−01 −4.5969E−02 8.0454E−03 −5.6219E−04  R11−9.0000E+01 −9.7791E−02 2.5093E−02 −1.1595E−03 −1.7275E−04  −7.2184E−065.2195E−06 −3.3385E−07  R12 −5.3678E+00 −6.6034E−02 2.6944E−02−8.2081E−03 1.6557E−03 −2.1373E−04 1.5562E−05 −4.7483E−07 

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16are aspheric surface coefficients.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, and P6R1 and P6R2 represent the object-side surface andthe image-side surface of the sixth lens L6. The data in the columnnamed “inflexion point position” refer to vertical distances frominflexion points arranged on each lens surface to the optic axis of thecamera optical lens 10. The data in the column named “arrest pointposition” refer to vertical distances from arrest points arranged oneach lens surface to the optical axis of the camera optical lens 10.

TABLE 3 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.625 P2R2 1 0.895 P3R1 1 0.445 P3R2 2 0.145 1.165 P4R1 2 0.255 1.065P4R2 2 0.365 1.245 P5R1 3 0.295 1.345 1.545 P5R2 2 1.075 1.765 P6R1 11.475 P6R2 1 0.705

TABLE 4 Number(s) of arrest points Arrest point position 1 P1R1 0 P1R2 0P2R1 1 0.955 P2R2 0 P3R1 1 0.675 P3R2 1 0.245 P4R1 1 0.455 P4R2 1 0.765P5R1 1 0.575 P5R2 1 1.715 P6R1 1 2.305 P6R2 1 1.755

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nmafter passing the camera optical lens 10 according to Embodiment 1,respectively. FIG. 4 illustrates a field curvature and a distortion witha wavelength of 555 nm after passing the camera optical lens 10according to Embodiment 1. A field curvature S in FIG. 4 is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 1.938 mm, an image height of 1.0H is 3.147 mm, an FOV (field ofview) in a diagonal direction is 83.20°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.319 R1 1.672 d1= 0.347 nd1 1.5445 ν1 55.99R2 2.284 d2= 0.190 R3 2.163 d3= 0.220 nd2 1.6614 ν2 20.41 R4 1.753 d4=0.060 R5 2.555 d5= 0.514 nd3 1.5445 ν3 55.99 R6 −79.708 d6= 0.367 R7−50.169 d7= 0.250 nd4 1.6355 ν4 23.97 R8 4.643 d8= 0.200 R9 62.317 d9=1.135 nd5 1.5445 ν5 55.99 R10 −0.863 d10= 0.204 R11 −5.036 d11= 0.471nd6 1.5352 ν6 56.12 R12 1.031 d12= 0.555 R13 ∞ d13= 0.210 ndg 1.5168 νg64.17 R14 ∞ d14= 0.278

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  9.8543E−01 −2.2529E−02 −1.1065E−03  −8.0511E−03−8.5889E−04 0.0000E+00 0.0000E+00 0.0000E+00 R2 −4.4190E+00 −8.2102E−032.7854E−02 −2.5315E−02  1.4788E−02 0.0000E+00 0.0000E+00 0.0000E+00 R3 4.2017E−01 −2.0504E−01 1.2130E−02  4.6396E−02 −2.7573E−02 0.0000E+000.0000E+00 0.0000E+00 R4 −2.8923E+00 −1.2009E−01 −5.0515E−02  1.1676E−01 −5.8137E−02 0.0000E+00 0.0000E+00 0.0000E+00 R5  3.7802E+00−4.9096E−02 −5.0786E−02  −6.8514E−02  1.3471E−01 −1.0905E−01 0.0000E+000.0000E+00 R6 −6.2355E+01 −4.9025E−02 −6.9383E−03   3.0976E−02−2.1892E−01 3.4504E−01 −2.7637E−01  8.5752E−02 R7  8.1924E+01−3.5040E−01 3.3033E−01 −6.3515E−01  6.6343E−01 −3.1501E−01 5.6302E−020.0000E+00 R8 −7.8658E+01 −2.6324E−01 3.4498E−01 −5.2208E−01  4.5712E−01−1.8669E−01 2.8159E−02 0.0000E+00 R9 −6.9092E+01 −1.3775E−01 2.1445E−01−2.6976E−01  1.6308E−01 −4.5381E−02 3.9869E−03 0.0000E+00 R10−3.7703E+00 −1.3047E−01 1.4131E−01 −1.4293E−01  1.0121E−01 −4.7264E−021.2672E−02 −1.3916E−03  R11 −9.0000E+01 −7.8016E−03 −4.0596E−02  2.2591E−02 −4.9194E−03 5.0441E−04 −2.0427E−05  0.0000E+00 R12−6.0122E+00 −2.7619E−02 2.8689E−03  2.2097E−04 −1.0323E−04 4.7465E−068.8038E−07 −6.9435E−08 

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 P1R2 0 P2R1 1 0.485 P2R2 1 0.555 P3R1 10.685 P3R2 0 P4R1 0 P4R2 1 0.255 P5R1 1 0.105 P5R2 1 1.355 P6R1 2 1.4852.385 P6R2 1 0.735

TABLE 8 Number of arrest points Arrest point position 1 P1R1 0 P1R2 0P2R1 1 0.895 P2R2 0 P3R1 1 0.935 P3R2 0 P4R1 0 P4R2 1 0.465 P5R1 1 0.175P5R2 0 P6R1 1 2.235 P6R2 1 1.965

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.944 mm, an image height of 1.0H is 3.147 mm, an FOV (field of view)in the diagonal direction is 82.80°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.312 R1 1.681 d1= 0.306 nd1 1.5445 ν1 55.99R2 2.025 d2= 0.153 R3 1.794 d3= 0.220 nd2 1.6614 ν2 20.41 R4 1.564 d4=0.060 R5 2.310 d5= 0.572 nd3 1.5445 ν3 55.99 R6 139.370 d6= 0.359 R7−93.919 d7= 0.250 nd4 1.6355 ν4 23.97 R8 5.392 d8= 0.196 R9 −18.047 d9=1.159 nd5 1.5445 ν5 55.99 R10 −0.892 d10= 0.219 R11 −9.074 d11= 0.459nd6 1.5352 ν6 56.12 R12 1.009 d12= 0.555 R13 ∞ d13= 0.210 ndg 1.5168 νg64.17 R14 ∞ d14= 0.282

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  8.7040E−01 −2.2447E−02 3.7862E−03 −1.0288E−02 7.2315E−04 0.0000E+00 0.0000E+00 0.0000E+00 R2 −3.7633E+00 −1.6450E−02 5.4548E−02−4.9789E−02 2.4690E−02  0.0000E+00 0.0000E+00 0.0000E+00 R3  3.4990E−01−2.0174E−01 2.6844E−02  4.7950E−03 −4.8767E−03   0.0000E+00 0.0000E+000.0000E+00 R4 −1.9987E+00 −1.0575E−01 −1.1155E−02   4.9651E−02−3.3431E−02   0.0000E+00 0.0000E+00 0.0000E+00 R5  2.8556E+00−4.7122E−02 −9.1025E−03  −8.8474E−02 1.0781E−01 −8.4354E−02 0.0000E+000.0000E+00 R6 −9.0000E+01 −4.9859E−02 5.7491E−04 −1.0958E−02−8.9185E−02   1.8372E−01 −1.7998E−01  6.2372E−02 R7 −9.0000E+01−3.1532E−01 2.8595E−01 −6.4519E−01 7.7341E−01 −4.3263E−01 9.3750E−020.0000E+00 R8 −8.9985E+01 −2.2838E−01 3.0647E−01 −5.1054E−01 4.8641E−01−2.1217E−01 3.4019E−02 0.0000E+00 R9 −9.0000E+01 −1.1294E−01 1.8426E−01−2.5061E−01 1.5017E−01 −3.4054E−02 1.9258E−04 0.0000E+00 R10 −3.7918E+00−1.3858E−01 1.4713E−01 −1.4973E−01 1.0507E−01 −4.8208E−02 1.2751E−02−1.3892E−03  R11 −7.4017E+01 −7.5366E−03 −3.6822E−02   1.9799E−02−4.1603E−03   4.1245E−04 −1.6187E−05  0.0000E+00 R12 −5.8807E+00−3.1484E−02 5.7127E−03 −8.9549E−04 1.5138E−04 −2.9713E−05 3.4283E−06−1.4707E−07 

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.575 P2R2 1 0.665 P3R1 1 0.755 P3R2 1 0.115 P4R1 0 P4R2 3 0.255 1.0451.175 P5R1 0 P5R2 1 1.355 P6R1 2 1.515 2.425 P6R2 1 0.725

TABLE 12 Number of arrest points Arrest point position 1 P1R1 0 P1R2 0P2R1 0 P2R2 0 P3R1 1 0.985 P3R2 1 0.185 P4R1 0 P4R2 1 0.465 P5R1 0 P5R20 P6R1 1 2.235 P6R2 1 1.945

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates a field curvature and a distortion of light witha wavelength of 555 nm after passing the camera optical lens 30according to Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.944 mm, an image height of 1.0H is 3.147 mm, an FOV (field of view)in the diagonal direction is 82.80°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis chromaticaberrations are fully corrected, thereby achieving excellent opticalcharacteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.488 3.500 3.500 f1 7.151 9.520 13.790 f2 −1000.613 −17.668 −29.696f3 41.317 4.542 4.295 f4 −10.116 −6.625 −7.956 f5 1.990 1.569 1.678 f6−2.260 −1.552 −1.665 f12 6.679 16.950 21.997 FNO 1.80 1.80 1.80 f1/f2.05 2.72 3.94 R11/d11 −18.31 −10.69 −19.77

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens; a second lens having a negativerefractive power; a third lens having a positive refractive power; afourth lens; a fifth lens; and a sixth lens; wherein the camera opticallens satisfies following conditions:2.00≤f1/f≤4.00; and−20.00≤R11/d11≤−10.00; where f denotes a focal length of the cameraoptical lens; f1 denotes a focal length of the first lens; R11 denotes acurvature radius of an object-side surface of the sixth lens; and d11denotes an on-axis thickness of the sixth lens.
 2. The camera opticallens according to claim 1 further satisfying following conditions:2.03≤f1/f≤3.97; and−19.88≤R11/d11≤−10.35.
 3. The camera optical lens according to claim 1,wherein the first lens has a positive refractive power, an object-sidesurface of the first lens is convex in a paraxial region and animage-side surface of the first lens is concave in the paraxial region;and the camera optical lens further satisfies following conditions:−21.55≤(R1+R2)/(R1−R2)≤−2.26; and0.03≤d1/TTL≤0.13; where R1 denotes a curvature radius of the object-sidesurface of the first lens; R2 denotes a curvature radius of theimage-side surface of the first lens; and TTL denotes a total opticallength from the object-side surface of the first lens to an imagesurface of the camera optical lens along an optical axis.
 4. The cameraoptical lens according to claim 3 further satisfying followingconditions:−13.47≤(R1+R2)/(R1−R2)≤−2.82; and0.05≤d1/TTL≤0.10.
 5. The camera optical lens according to claim 1,wherein an object-side surface of the second lens is convex in aparaxial region, an image-side surface of the second lens is concave inthe paraxial region, and the camera optical lens further satisfiesfollowing conditions:−573.75≤f2/f≤−3.37;4.78≤(R3+R4)/(R3−R4)≤38.92; and0.02≤d3/TTL≤0.11; where f2 denotes a focal length of the second lens; R3denotes a curvature radius of the object-side surface of the secondlens; R4 denotes a curvature radius of the image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 6. The camera optical lens according to claim 5 further satisfyingfollowing conditions:−358.59≤f2/f≤−4.21;7.64≤(R3+R4)/(R3−R4)≤31.14; and0.04≤d3/TTL≤0.09.
 7. The camera optical lens according to claim 1,wherein an object-side surface of the third lens is convex in a paraxialregion, and the camera optical lens further satisfies followingconditions:0.61≤f3/f≤17.77;−6.50≤(R5+R6)/(R5−R6)≤−0.63; and0.05≤d5/TTL≤0.17; where f3 is a focal length of the third lens; R5denotes a curvature radius of the object-side surface of the third lens;R6 denotes a curvature radius of an image-side surface of the thirdlens; d5 denotes an on-axis thickness of the third lens; and TTL denotesa total optical length from an object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 8.The camera optical lens according to claim 7 further satisfyingfollowing conditions:0.98≤f3/f≤14.21;−4.06≤(R5+R6)/(R5−R6)≤−0.78; and0.08≤d5/TTL≤0.14.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a negative refractive power, an image-sidesurface of the fourth lens is concave in a paraxial region, and thecamera optical lens further satisfies following conditions:−5.80≤f4/f≤−1.26;0.42≤(R7+R8)/(R7−R8)≤6.85; and0.02≤d7/TTL≤0.09; where f4 is a focal length of the fourth lens; R7denotes a curvature radius of an object-side surface of the fourth lens;R8 denotes a curvature radius of the image-side surface of the fourthlens; d7 denotes an on-axis thickness of the fourth lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 10. The camera optical lens according to claim 9 furthersatisfying following conditions:−3.63≤f4/f≤−1.58;0.66≤(R7+R8)/(R7−R8)≤5.48; and0.04≤d7/TTL≤0.07.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a positive refractive power, an image-sidesurface of the fifth lens is convex in a paraxial region, and the cameraoptical lens further satisfies following conditions:0.22≤f5/f≤0.86;0.38≤(R9+R10)/(R9−R10)≤1.66;0.09≤d9/TTL≤0.35; where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of an object-side surface of the fifth lens;R10 denotes a curvature radius of the image-side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from an object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 12.The camera optical lens according to claim 11 further satisfyingfollowing conditions:0.36≤f5/f≤0.68;0.61≤(R9+R10)/(R9−R10)≤1.32; and0.15≤d9/TTL≤0.28.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a negative refractive power, the object-sidesurface of the sixth lens is concave in a paraxial region, an image-sidesurface of the sixth lens is concave in the paraxial region, and thecamera optical lens further satisfies following conditions:−1.30≤f6/f≤−0.30;0.33≤(R11+R12)/(R11−R12)≤1.20; and0.05≤d11/TTL≤0.14; where f6 denotes a focal length of the sixth lens;R12 denotes a curvature radius of the image-side surface of the sixthlens; and TTL denotes a total optical length from an object-side surfaceof the first lens to an image surface of the camera optical lens alongan optical axis.
 14. The camera optical lens according to claim 13further satisfying following conditions:−0.81≤f6/f≤−0.37;0.53≤(R11+R12)/(R11−R12)≤0.96; and0.07≤d11/TTL≤0.11.
 15. The camera optical lens according to claim 1,wherein the camera optical lens further satisfies following condition:0.96≤f12/f≤9.43, where f12 denotes a combined focal length of the firstlens and the second lens.
 16. The camera optical lens according to claim15 further satisfying following condition:1.53≤f12/f≤7.54.
 17. The camera optical lens according to claim 1, wherea total optical length TTL from an object-side surface of the first lensto an image surface of the camera optical lens along an optical axis isless than or equal to 5.50 mm.
 18. The camera optical lens according toclaim 17, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.25 mm.
 19. The camera optical lensaccording to claim 1, wherein an F number of the camera optical lens isless than or equal to 1.85.
 20. The camera optical lens according toclaim 19, wherein the F number of the camera optical lens is less thanor equal to 1.82.